RTP-060-6 Exhaust Muffler Tip Curved Split Center Oval Double Wall Resonated 2.25" Inlet / ID, 5.75"x3" Outlet / OD, 6" Length. Red Tail Performance Exhaust Tips are designed and built for the true enthusiast. RTP exhaust tips are only made from T304 stainless steel material, providing optimal durability that continually maintains its aesthetic appeal. These exhaust tips will never rust, show corrosion, or discolor. Built on the principles of quality, durability, and reliability, Red Tail Performance exhaust tips will meet and exceed even the most discerning of individuals. Unlike single wall tips, double wall tips are manufactured from a pair of tubes rather than a single tip, which are pressed to form an angle cut or round edge design. Precision is extremely important in the design and construction of these tips so that fitment and design are not adversely affected. Our Red Tail Performance double wall designed exhaust tips were carefully developed with the goal of dispersing heat faster, allowing the tip to stay cooler than the standard single wall exhaust tips. With our double wall designed exhaust tips, not only do you get a cooler tip, but you also get a tip that will accentuate the look of your car. Although more expensive than single wall exhaust tips, these additional costs are more than justified when considering the extra material, labor costs, and additional required precision associated with the manufacturing of these tips. Resonated Tip Our Red Tail Performance resonated tips will yield a subtle adjustment to the sound of your exhaust. Our resonated tips were designed to produce a smoother sound resonating from your exhaust, resulting in a slightly deeper, less edgy tone.